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Re: [PATCH v2 2/4] x86: Introduce MSR_UNHANDLED
- To: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Date: Thu, 18 Feb 2021 11:51:26 +0100
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Wed, Jan 20, 2021 at 05:49:10PM -0500, Boris Ostrovsky wrote:
> When toolstack updates MSR policy, this MSR offset (which is the last
> index in the hypervisor MSR range) is used to indicate hypervisor
> behavior when guest accesses an MSR which is not explicitly emulated.
It's kind of weird to use an MSR to store this. I assume this is done
for migration reasons?
Isn't is possible to convey this data in the xl migration stream
instead of having to pack it with MSRs?
Thanks, Roger.
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